Finding the Fourth Proportional to 279,978.92, 386,362.50 and 152,657

Step by Step Solution

1. Step 1: Write the proportion equation
   279,978.92 : 386,362.50 = 152,657 : x
2. Step 2: Convert to fraction form
   279,978.92/386,362.50 = 152,657/x
3. Step 3: Cross multiply
   279,978.92x = 386,362.50 × 152,657
4. Step 4: Simplify right side
   279,978.92x = 58,980,940,162.50
5. Step 5: Solve for x
   x = 58,980,940,162.50/279,978.92
6. Step 6: Final answer
   x = 210,662.07